------------------------------------------------------------------------------- |-- Module : Distribution.ModuleName-- Copyright : Duncan Coutts 2008---- Maintainer : cabal-devel@haskell.org-- Portability : portable---- Data type for Haskell module names.{- All rights reserved.
Redistribution and use in source and binary forms, with or without
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}moduleDistribution.ModuleName(ModuleName,fromString,components,toFilePath,main,simple,)whereimportDistribution.Text(Text(..))importqualifiedDistribution.Compat.ReadPasParseimportqualifiedText.PrettyPrintasDispimportqualifiedData.CharasChar(isAlphaNum,isUpper)importSystem.FilePath(pathSeparator)importData.List(intersperse)-- | A valid Haskell module name.--newtypeModuleName=ModuleName[String]deriving(Eq,Ord,Read,Show)instanceTextModuleNamewheredisp(ModuleNamems)=Disp.hcat(intersperse(Disp.char'.')(mapDisp.textms))parse=doms<-Parse.sepBy1component(Parse.char'.')return(ModuleNamems)wherecomponent=doc<-Parse.satisfyChar.isUppercs<-Parse.munchvalidModuleCharreturn(c:cs)validModuleChar::Char->BoolvalidModuleCharc=Char.isAlphaNumc||c=='_'||c=='\''validModuleComponent::String->BoolvalidModuleComponent[]=FalsevalidModuleComponent(c:cs)=Char.isUpperc&&allvalidModuleCharcs{-# DEPRECATED simple "use ModuleName.fromString instead" #-}simple::String->ModuleNamesimplestr=ModuleName[str]-- | Construct a 'ModuleName' from a valid module name 'String'.---- This is just a convenience function intended for valid module strings. It is-- an error if it is used with a string that is not a valid module name. If you-- are parsing user input then use 'Distribution.Text.simpleParse' instead.--fromString::String->ModuleNamefromStringstring|allvalidModuleComponentcomponents'=ModuleNamecomponents'|otherwise=errorbadNamewherecomponents'=splitstringbadName="ModuleName.fromString: invalid module name "++showstringsplitcs=casebreak(=='.')csof(chunk,[])->chunk:[](chunk,_:rest)->chunk:splitrest-- | The module name @Main@.--main::ModuleNamemain=ModuleName["Main"]-- | The individual components of a hierarchical module name. For example---- > components (fromString "A.B.C") = ["A", "B", "C"]--components::ModuleName->[String]components(ModuleNamems)=ms-- | Convert a module name to a file path, but without any file extension.-- For example:---- > toFilePath (fromString "A.B.C") = "A/B/C"--toFilePath::ModuleName->FilePathtoFilePath=concat.intersperse[pathSeparator].components